Multiple leaf concealed hinge



Aug. 11, 1953 R. J. WILSON MULTIPLE LEAF CONCEALED HINGE 2 Sheets-Sheet1 Filed Aug. 25, 1952 /s mmvrox Reefer d. WILSON BY 2 21:4114, 7641441 20&1 4

ATTORNEYS.

Aug. 11, 1953 R. J. WILSON 2,543,093

MULTIPLE LEAF CONCEALED HINGE Filed Aug. 25, 1952 2 Sheets-Sheet 2 lINVENTOR.

ROBERT J. WILSON KW), )w

ATTORNEYS.

Patented Aug. ll,::.1953

MULTIPLE LEAF CONCEALED'HINGE Robert J. Wilson, Detroit, Mich;assignor'to Soss Manufacturing Company, Detroit-,;Mich., acorvporationoi. Maine Application August 25, 1952;SerialNo." 306,094

' 4 Claims.

Anotherobject of the invention is that asthe dooris. swung open the hige, arms some of which are arranged to form a toggle, throw over the.center line so as to tend to keep the door fully open.

Referring to the drawings:

Fig. 1 is a fragmentary section through a refrigerator taken at thecabinet pillar and the door pillar. The door is in closed position.

Fig. 2 is a similar view showing the door swung open.

Fig. 3 is an elevation of the hinge.

Fig. 4 is a perspective of the door hinge casing.

Fig. 5 is a perspective of the stationary pillar hinge arm and butt.

Fig. 6 is a fragmentary sectional view of the pillar and the hinge withparts broken away.

The stationary pillar of the cabinet is designated I. This is formed ofsheet metal to which is secured a heavy metal face strip 2. The sheetmetal is doubled upon itself and projects beyond the face strip 2 of thepillar, then it is turned over and projects integrally to form at 3 adoor jamb with which engages the rubber seal 4 which is secured on thedoor pillar 5. This door pillar 5 is cut away at B to form a hingerecess. The hinge butt I l is fastened to the metal strip 2 of thestationary pillar by means of screws engaging in a nut member l2 on theback of the stationary pillar. There are three of these screws goingthrough the three countersunk screw holes 9 in the butt. This butt IIhas a long outwardly projecting fixed arm l4 with two stepped or insetportions. This arm is widest at its inner portion [5 where it joins thehinge butt II. It is stepped down to about half width in the portion [6.It is cut away at both top and bottom and in these cut away portions area pair of links I! pivoted at l8 to the narrow portion of the fixed arm[4. The links H are, at their outer ends, pivoted to the ears 19 thatproject from the hinge box that is fastened to the door.

These are two of these bowed links 11, each preferablyxtwotply. Theouter end of the stationary arm I4 is stepped down or cut away'at 2| toform the narrowed end 22 to -which are pivoted twolinks 23 aboveandbelow the narrow portion of the end of .the stationary-arm l4. Theselinks passlinto "the hinge boxand are pivoted at '24 to the top andbottom-wall of'the hinge box.

Pivotally supported onthe'two steppeddown portions of the stationary arml4 are what amounts, to a pair of parallel links.-;but theseapproximately parallel :links have ineach case a doublezply arm aboveand-below the stationary arm. The two offsets and the-twothicknesses ofthe stationary arm are for the purpose of-setting these parallellinksindifferent planes-so that theycan pass eachother in the movements thattheymake in the 'openingand'closing'of the door.

The upper plate 1 and the lower plate 8 are fastened by screws [0passing through the countersunk openings 9 into the portions of the doorpillar above and below the cut out recess 6. This large cut out recessaccommodates the hinge links 23 and the hinge arm I4 when the door is inclosed position, see the position of the parts in Fig. 1. Channels 26are provided in the hinge box above and below the stop block 25 toaccommodate the swinging links [1. When the door opens to a rightangular position as shown in Fig. 2 the hinge box carried on the doorpillar has turned through and changes from a position shown in Fig. 1 toaposition shown in Fig. 2. It is turned so that now the links 23 arestopped by the bases of the channels 26 and the pivot pin 29 andconsequently the door is checked in the perpendicular position. Block 25spaces the channels 26. The links, when the door is closed as shown inFig. 1 form roughly a parallelogram though technically a trapezoidbecause no two of the links are exactly parallel. The general action isthe action of a set of parallel arms.

Note, by comparing Figs. 1, 2 and 6 that the door not only swings onpivot 24, but the door moves bodily and carries the pivot 24, see Fig.6, from its position shown in Fig. 1 to the position shown in Fig. 6which is quite a little outward from the original position. But then,when the door is swung clear open, pivot 24 returns to the positionshown at 24a in Fig. 6 and now lies in substantially the same positionthat it was when the door was closed as shown in Fig. 1.

This is a very desirable movement for the reason that the door isarrested in the perpen- 3 dicular or vertical position and it does notproject much beyond the side of the cabinet by reason of the compoundmovement which not only throws the door out, but in the final positionpulls the door in so as to get as much space and clearance adjoining thecabinet as possible.

The links l1, together with the hinge casing attached to the door pillarforms a toggle in which the hinge casing is one arm pivoted on the link23 as a support, and the links I! pivoted at 29 to the casing are theother arm of the toggle. The knee of the toggle is at the pivot 29. Whenthe door is closed as shown in Fig. 1, the knee of the toggle is below astraight line between the two ends I8 and 24 of the toggle, and the doortends to keep closed, especially if a spring should be added to stressthe hinge arms. When the door is in the position shown in Fig. 6, thehinge arms of the toggle are just ready to pass the center line of thetoggle. And, when the door is in the position shown in Fig. 2, thetoggle arms have passed the center line and are broken upwardly.

What I claim is:

1. A concealed hinge for a cabinet or other article having incombination a hinge butt for attachment to the face of a stationarypillar of a cabinet, provided with an outwardly extending longstationary arm having insets or step-downs therein to diminish thethickness of the hinge arm first beginning near the hinge butt andsecondly at the free end of the stationary arm, a hinge casin with upperand lower plates for attachment to the pillar of a swinging door andbelow a recess provided in the door pillar, the hinge casing having abox portion at the middle fitted into said recess with outwardlyprojecting ears, one at its top and one at its bottom, and provided witha pair of clearance channels, a

pair of links pivotally connected to the first narrowed section of thestationary arm at a point adjacent the hinge butt, and with said ears,one link being above the stationary arm and the other below thestationary arm, and links connecting the free end of the stationary armin the second inset and step-down with the center stop block, one linkabove and the other below the stationary arm, the said links formingroughly a parallelogram set of links for swinging the door and alsomoving the door bodily so that when the door is swung out toperpendicular position the jamb face of the door is swung in and thedoor is stopped in perpendicular position by means of the secondmentioned links butting against the channel bottoms.

2. The combination claimed in claim 1 in which each one of these linksis made up of two strips or plies.

3. The combination claimed in claim 1 in which the hinge casing is a diecasting.

4. The combination claimed in claim 1 in which the hinge casing pivotson the second mentioned pair of links and this casing together with thefirst mentioned pair of links pivoted to the fixed arm adjacent thehinge butt form toggles which swing over lines through the ends of therespective toggles in opening and closing of the door to tend to keepthe door in open or closed position.

ROBERT J. WILSON.

References Cited in the file of this patent UNITED STATES PATENTS NumberName Date 1,078,786 Hanba et al Nov. 18, 1913 1,941,529 Bates Jan. 2,1934 2,164,757 Soss July 4, 1939

